include/drm/drm_blend.h

   1 /*
   2  * Copyright (c) 2016 Intel Corporation
   3  *
   4  * Permission to use, copy, modify, distribute, and sell this software and its
   5  * documentation for any purpose is hereby granted without fee, provided that
   6  * the above copyright notice appear in all copies and that both that copyright
   7  * notice and this permission notice appear in supporting documentation, and
   8  * that the name of the copyright holders not be used in advertising or
   9  * publicity pertaining to distribution of the software without specific,
  10  * written prior permission.  The copyright holders make no representations
  11  * about the suitability of this software for any purpose.  It is provided "as
  12  * is" without express or implied warranty.
  13  *
  14  * THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
  15  * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
  16  * EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY SPECIAL, INDIRECT OR
  17  * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
  18  * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
  19  * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
  20  * OF THIS SOFTWARE.
  21  */
  22
  23 #ifndef __DRM_BLEND_H__
  24 #define __DRM_BLEND_H__
  25
  26 #include <linux/list.h>
  27 #include <linux/ctype.h>
  28
  29 struct drm_device;
  30 struct drm_atomic_state;
  31
  32 /*
  33  * Rotation property bits. DRM_ROTATE_<degrees> rotates the image by the
  34  * specified amount in degrees in counter clockwise direction. DRM_REFLECT_X and
  35  * DRM_REFLECT_Y reflects the image along the specified axis prior to rotation
  36  *
  37  * WARNING: These defines are UABI since they're exposed in the rotation
  38  * property.
  39  */
  40 #define DRM_ROTATE_0    BIT(0)
  41 #define DRM_ROTATE_90   BIT(1)
  42 #define DRM_ROTATE_180  BIT(2)
  43 #define DRM_ROTATE_270  BIT(3)
  44 #define DRM_ROTATE_MASK (DRM_ROTATE_0   | DRM_ROTATE_90 | \
  45                          DRM_ROTATE_180 | DRM_ROTATE_270)
  46 #define DRM_REFLECT_X   BIT(4)
  47 #define DRM_REFLECT_Y   BIT(5)
  48 #define DRM_REFLECT_MASK (DRM_REFLECT_X | DRM_REFLECT_Y)
  49
  50 static inline bool drm_rotation_90_or_270(unsigned int rotation)
  51 {
  52         return rotation & (DRM_ROTATE_90 | DRM_ROTATE_270);
  53 }
  54
  55 int drm_plane_create_rotation_property(struct drm_plane *plane,
  56                                        unsigned int rotation,
  57                                        unsigned int supported_rotations);
  58 unsigned int drm_rotation_simplify(unsigned int rotation,
  59                                    unsigned int supported_rotations);
  60
  61 int drm_plane_create_zpos_property(struct drm_plane *plane,
  62                                    unsigned int zpos,
  63                                    unsigned int min, unsigned int max);
  64 int drm_plane_create_zpos_immutable_property(struct drm_plane *plane,
  65                                              unsigned int zpos);
  66 int drm_atomic_normalize_zpos(struct drm_device *dev,
  67                               struct drm_atomic_state *state);
  68 #endif